MAKE regular David Prutchi shows how his ten-year-old daughter and he remade an expensive "designer" sand pendulum using hardware-store components.
Posted by Sean Michael Ragan | Tuesday March 20th, 2012 6:00 AM
Categories: Kids & Family, Science | 3 Comments
DIY physics guru David Prutchi coveted one of the expensive professional-grade gyroscopic camera stabilizers made by Kenyon Laboratories. "These devices," he observes, "don’t seem to have changed much since Kenyon’s...
Posted by Sean Michael Ragan | Monday March 12th, 2012 6:00 AM
Categories: Photography & Video, Science | 23 Comments
Refurbishing old scientific and industrial equipment from eBay is something I love to do. If you understand what you’re looking for and are a savvy eBay user, you can score...
Posted by Sean Michael Ragan | Tuesday February 21st, 2012 6:00 AM
Categories: Electronics, Science | 4 Comments
By now, hopefully, most of you will have seen Steve Hoeffer’s Tacit haptic wrist rangefinder project in MAKE Vol 29. MAKE regular David Prutchi recently saw it, and just sent...
Posted by Sean Michael Ragan | Tuesday February 14th, 2012 6:00 AM
Categories: Electronics | 4 Comments
In today’s project on diyphysics.com, David Prutchi shows how to build a Cockcroft–Walton multiplier using a “ladder” of capacitors and diodes on perfboard, submerged in mineral oil, inside a sealed...
Posted by Sean Michael Ragan | Thursday February 9th, 2012 1:00 PM
Categories: Electronics, Science | 2 Comments
David Prutchi, whose surplus plutonium probe shenanigans we covered last week, received Micro-Mark’s branded version of the popular Sieg X2 mini mill for a recent birthday, then retrofitted it with...
Posted by Sean Michael Ragan | Tuesday February 7th, 2012 6:00 AM
Categories: 3D Printing, Science, Tools, Workshop | 3 Comments
The late unpleasantness in Japan has recently focused our attention on homemade radiation detectors. These are often lumped together under the term “Geiger counter,” but in fact there is more...
Posted by Sean Michael Ragan | Thursday February 2nd, 2012 1:42 PM
Categories: Electronics, Science | 5 Comments
We’re getting a nice response from makers who are excited about the upcoming DIY Space issue of MAKE and who want to share their space projects with us. David Prutchi...
Posted by Gareth Branwyn | Tuesday October 5th, 2010 10:37 PM
Categories: Science | No Comments
David writes – “This site provides step-by-step instructions on modifying a Civil Defense CD V-700 Geiger counter into a unit with digital readout compatible with Geiger tubes and scintillation probes.”...
Posted by Phillip Torrone | Friday September 29th, 2006 2:14 PM
Categories: Electronics | No Comments
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